except that most healer abilities cast in under 2 seconds or are instant, even without spellspeed stacking, if i go completely spell speed in every slot on blm my GCD sits at 2,29 my whm friend who does not spell speed stack cast at around 1.87. So 1 for 1 does not result in interrupts, esuna being super fast + purify being castable on other targets makes this worse (dps can un stun lock that healer.)
Healers have an aoe pvp ability that reduces all magic damage by 40% + protect (the whm variation) couple this with the fact that we're stuck in i80 gear and its not really a whole lots of damage. The best way to take down a healer is phantom dart -> fire > firestarter swiftcast flare. without swift flare is a very large casting time that coincidentally can be interrupted by ruin 2 or aero. and btw they do actually attack, the difference is they can usually take their time with it cause most dps cant actually heal. schs have their 3 dots + bane and ruin. Whm have holy, aero and stone.